BlinD

Should my bov be slightly open at idle? Or should it be totally closed?

Well I was just sitting here pondering about why my bov doesnt sound like any other RFL. Then I was thinking hrm I'm using a pretty big vac line and using the brake booster for a vac source. Maybe I'm putting such vacuume on it that its making my bov stay open at idle. Should I add washers to it? Im only on 8psi thats why I never thought it would need it.

hotrex

it should be totally closed at idel

BlinD

HRM.. but then now thinking about it. At idle its under vac. Shouldnt it be open at idle so that when you shift the vac opens the bov up?

sohcrxsi

the bov will use the vacuume from the intake manifold and the pressure from the intake tube during a shift to open the valve

BlinD

hrm.. ok I guess I'll try adding washers today. But even when I had my 1g dsm it also was open at idle. So I wasnt sure.

bikerchris13

the spring inside should keep it closed under idle vacuum

BlinD

oh well.. hopefully this will fix it.. gonna work on it later today and add some washers. =)

Reddy

At idle it should be OPEN.

BlinD

Damn you people. lol Which way should it be?

Reddy

Out of the 10 BOV's I've installed, all of them are open at idle. Think, if it was closed all the time how would it blow off? The vaccum pulls on the piston and opens it up. If it is closed it is too tight.